Louis nissim



No. 620.664. Patented Mar. 7, I899.

L. NISSIM.

ELASTIC BAND.

(Application filed Apr. 15, 1898.)

(No Model.)-

UNITED STATES PATENT OFFICE.

LOUIS NISSIM, OF LONDON, ENGLAND.

ELASTIC BAND.

SPECIFICATION forming part of Letters Patent No. 620,664, dated March 7,1899.

Application filed April 15, 1898. Serial No. 677,701. (No model.)

T0 at whom it may concern.-

Be it known that I, LoUIs NIssIM, mechani cian, a subject of the Sultanof Turkey, residing at 12 Leadenhall street, in the city of London,England, have invented certain new and useful Improvements in ElasticBands; and I do hereby declare that the following is a full, clear, andexact description of the same.

My invention relates to elastic bands such as are usually made ofIndia-rubber or similar extensible material for the purpose of holdingpapers or in general for embracing a greater or less number of loosearticles loosely connected together.

The object of my invention is to make such bands of greater strengththan hitherto, the same thickness of rubber or the like being provided.

My improved elastic bands are made of a corrugated form,the corrugationsbeing either concentric or radial and of any suitable shape.

In the accompanying drawings, Figure 1 is a plan of a circular elasticband constructed in accordance with my invention. Fig. 2 is a section onthe line 2 2, Fig. 1. Fig. 3 is a plan, and Fig. 4 an edge View, of aband having radial corrugations. Fig. 5 is a perspective View of amodified form. Fig. 6 is a perspective view of another modification, aportion of the band being broken away to show the section; and Fig. 7 isa plan of a fourth modification.

Referring now to Figs. 1 and 2,the band illustrated is somewhat similarto the ordinary elastic bands cut from a sheet of india-rubber. Saidband is, however, corrugated, as shown at a. The corrugations arearranged concentrically, and the angles of said corrugations are rightangles. It will be furthermore observed that the lowest points of thetroughs of the corrugations on the upper side of the band are in thesame plane as the highest points of the troughs of the corrugations onthe under side. I do not, however, confine myself to the exact shape ofcorrugation shown in Fig. 2, as the crests may be rounded, if desired,and corrugations of different angles may be employed.

In Figs. 3 and 4 the band is shown as being corrugated radially, and inFig. 5 such a radially-corrugated band is shown in its deformed positionencircling a roll of papers, for example, the roll being, however, notshown in the figure. Such forms of corru gation may advantageously beused when the band is not required to be stretched to any great extent.

Fig. 6 is a view of a band out from a tube of elastic material, thecorrugations being disposed concentrically in planes perpendicular tothe axis, a portion of the band being broken out to show the section. Itwill be observed that Fig. 6 exhibits the form taken by a band such asshown in Fig. 1 when the same is stretched.

Fig. 7 is a band of round or square section suitable for securingtogether the ribs of um brellas, for example,being particularly adaptedfor this purpose, since the tops of said ribs lie in the troughs of theinner corrugations, as will be readily understood.

Bands or rings made according to my invention will resist tension to agreater de* gree than ordinary bands made of fiat rubber. Furthermore,in the case of bands made with concentric corrugations, such as shown inFigs. 1 and 6, if one part of the band breaks the break will in generalextend no farther than through one corrugation,where-' as with anordinary india-rubber band when once it has begun to split it stretchesat the break and the fracture extends from edge to edge, therebyrendering the same useless.

What I claim is 1. An elastic band consisting of a perma= nently-closedcorrugated ring.

2. An elastic band, consisting of a permanently-closedcontinuously-corrugated rubber ring.

3. An elastic band, consisting of an annular sheet ofradially-corrugated rubber.

In witness whereof I have hereunto set my hand in presence of twowitnesses.

LOUIS NISSIM.

